Question 923326
The manufacturer of a new line of ink-jet printers would like to include as part of its advertising the number of pages a user can expect from a print cartridge. A sample of 10 cartridges revealed the following number of pages printed.
3,250 ;  2,450  2,550 ; 2,500 ; 2,400 ; 2,610 ; 2,990 ; 3,320 ; 3,170 ; 2,730
sum = 27970
mean = 27970/10 = 2797
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(a) 
What is the point estimate of the population mean? (Round your answer to the nearest whole number.)
u = 2797
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Estimated population mean = 2797 

(b) 
Develop a 95 percent confidence interval for the population mean. (Round your answers to 2 decimal places.)
95%CI:: 2797 - 1.96*353/sqrt(10) < u < 2797 + 1.96*353/sqrt(10)
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Cheers,
Stan H.
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Confidence interval for the population mean is between .... and .....